Catch version and option skew errors from build_daemon (#43403)

packages/flutter_tools/lib/src/build_runner/resident_web_runner.dart

@@ -4,6 +4,7 @@
 
 import 'dart:async';
 
+import 'package:build_daemon/client.dart';
 import 'package:meta/meta.dart';
 import 'package:vm_service/vm_service.dart' as vmservice;
 import 'package:webkit_inspection_protocol/webkit_inspection_protocol.dart' hide StackTrace;
@@ -212,6 +213,18 @@ class ResidentWebRunner extends ResidentRunner {
         );
       });
       return result;
+    } on VersionSkew {
+      // Thrown if an older build daemon is already running.
+      throwToolExit(
+        'Another build daemon is already running with an older version.\n'
+        'Try exiting other Flutter processes in this project and try again.'
+      );
+    } on OptionsSkew {
+      // Thrown if a build daemon is already running with different configuration.
+      throwToolExit(
+        'Another build daemon is already running with different configuration.\n'
+        'Try exiting other Flutter processes in this project and try again.'
+      );
     } on WebSocketException {
       throwToolExit('Failed to connect to WebSocket.');
     } on BuildException {

packages/flutter_tools/test/general.shard/resident_web_runner_test.dart

@@ -5,6 +5,7 @@
 import 'dart:async';
 import 'dart:convert';
 
+import 'package:build_daemon/client.dart';
 import 'package:dwds/dwds.dart';
 import 'package:flutter_tools/src/base/common.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
@@ -583,6 +584,44 @@ void main() {
     await expectation;
   }));
 
+  test('Successfully turns OptionsSkew error into ToolExit', () => testbed.run(() async {
+    _setupMocks();
+    final Completer<DebugConnectionInfo> connectionInfoCompleter = Completer<DebugConnectionInfo>();
+    final Completer<void> unhandledErrorCompleter = Completer<void>();
+    when(mockWebFs.connect(any)).thenAnswer((Invocation _) async {
+      unawaited(unhandledErrorCompleter.future.then((void value) {
+        throw OptionsSkew();
+      }));
+      return ConnectionResult(mockAppConnection, mockDebugConnection);
+    });
+
+    final Future<void> expectation = expectLater(() => residentWebRunner.run(
+      connectionInfoCompleter: connectionInfoCompleter,
+    ), throwsA(isInstanceOf<ToolExit>()));
+
+    unhandledErrorCompleter.complete();
+    await expectation;
+  }));
+
+  test('Successfully turns VersionSkew error into ToolExit', () => testbed.run(() async {
+    _setupMocks();
+    final Completer<DebugConnectionInfo> connectionInfoCompleter = Completer<DebugConnectionInfo>();
+    final Completer<void> unhandledErrorCompleter = Completer<void>();
+    when(mockWebFs.connect(any)).thenAnswer((Invocation _) async {
+      unawaited(unhandledErrorCompleter.future.then((void value) {
+        throw VersionSkew();
+      }));
+      return ConnectionResult(mockAppConnection, mockDebugConnection);
+    });
+
+    final Future<void> expectation = expectLater(() => residentWebRunner.run(
+      connectionInfoCompleter: connectionInfoCompleter,
+    ), throwsA(isInstanceOf<ToolExit>()));
+
+    unhandledErrorCompleter.complete();
+    await expectation;
+  }));
+
   test('Rethrows Exception type', () => testbed.run(() async {
     _setupMocks();
     final Completer<DebugConnectionInfo> connectionInfoCompleter = Completer<DebugConnectionInfo>();